Questions, being both structurally and semantically one of the types of sentences, are asked by one person and expected to be unswered by another. Essentially, questions belong to the spoken language and presuppose the presence of an interlocutor, that is, they are commonly encountered in dialogue. The questioner is presumed not to know the answer.
Question-in-the-narrative changes the real nature of a lestion and turns it into a stylistic device. A question-in- e-narrative is asked and answered by one and the same person, usually the author.
It becomes statement with strong emotional implications. Here is an example from Byron's "Don Juan":
Sometimes question-in-the-narrative gives the impression of an intimate talk between the writer and the reader. E.g.:
"Scrooge knew he was dead? Of course he did. How could it be otherwise? Scrooge and he were partners for I don't know how many years". (Dickens)
Question-in-the-narrative is very often used in oratory. This explained by one of the leading features of oratorical style - to induce the desired reaction to the content of the speech. Questions here chain the attention of the listeners to the matter the orator is dealing with and prevent it from wandering. They also give the listeners time to absorb what has been said, and prepare for the next point.
Question-in-the-narrative may also remain unanswered as in:
"How long must it go on? How long must we suffer? Where is the end? What is the end?" (Norris)
These sentences show a gradual transition to rhetorical questions. There are only hints of the possible answers. Indeed, the first and the second questions suggest that the existing state of affairs should be put an end to. The third and the fourth questions suggest that the orator himself could not find a solution to the problem.